Make any website have a dark mode, by saving each of these 3 lines as a bookmarklet.

Dark mode for any website.js

// dimmer
javascript:var style=document.createElement('style');style.innerText='html{filter:saturate(25%) invert(80%) brightness(80%)}img{filter:invert(100%);}';var head=document.getElementsByTagName('head')[0];head.appendChild(style);

// less dim, but still inverted
javascript:var style=document.createElement('style');style.innerText='html{filter:saturate(33%) invert(90%);}img{filter:invert(100%);}';var head=document.getElementsByTagName('head')[0];head.appendChild(style);

// undo dimmer
javascript:var style=document.createElement('style');style.innerText='html{filter:saturate(100%) invert(0%) brightness(100%);}img{filter:invert(0%);}';var head=document.getElementsByTagName('head')[0];head.appendChild(style);